Space Shuttle Launch Pad 39A with Challenger STS-6 (1:144)

[spacerunner]

Hello friends,

from Shapeways came the news that the wall of the doughnut shape is a bit too thin, so my friend Joe has changed it to 0.5 mm.

And these are now the final dimensions with which he wants to upload his 3D model tonight.






Source: arcforums.com (crackerjazz)

Then we'll see.

[spacerunner]

Hello everybody,

my friend Joe has uploaded his 3D model to Shapeways, and of course I could not resist and have immediately ordered a pair of them.


Source: shapeways.com (Crackerjazz)
Now I can't wait to hold it in my hands and to have a close look at them.
Hopefully, Shapeways will soon greenlight it.

[eagleclaw4935]

No stones unturned here.

[spacerunner]

There is nothing left to be added!

[spacerunner]

Hello everybody,

a friend of our Raumcon-Forum has sent me a small roll of silver adhesive foil for testing.



The foil is so thin that one can hardly measure its thickness (about 0.03 mm), and was of course tried the same time, for which I have cut small 1 mm wide strips with a brand-new cutter knife.





which I then glued tentatively onto an Airfix Aft Skirt-Ring, which seems to be a practicable solution.



Then I also glued three of these foil strips on the half pipe (right).



And finally respectively 24 strips must be glued onto the 3D printed and painted ASTC Rings, which might be a bit of fiddling, but should be feasible.

[sreinmann]

Manfred, if you have already spoken about this, I apologize for being repetitive. What method of glue are you using on the foil? It seems to be laying down much more smoothly than any method I’ve tried (white glue, glue stick, CA glue).

Edit: oops, you said it was adhesive! :facepalm: and only .03mm?!

[drg]

One of the most impressive models I've ever seen, in any medium. Great!

[spacerunner]

Thanks Guys for your nice words, I'm glad if you like my work.

[spacerunner]

Hello together,

well, I was rather amazed when I suddenly saw at noon today that the adhesive film strips had detached again from the rounding of the half pipe.



Apparently, the adhesive film has certain residual stresses inside, which exceed the adhesive force of the strip after a certain time and lead to detachment.

This can be seen on this piece of adhesive foil, which bulges itself to the silver side after cutting from the roll.



A similar effect I noticed every now and then on some of the glued strip ends, which did not glue firmly enough and stood out a bit (≤ 1 mm), which I then again had to glue with MEK, and a very unruly end with CA.

The household foil does not have these internal stresses, which is why their strips are still firmly fixed, furthermore they were glued with MEK respectively CA.

However, I have to say in hindsight that I had not degreased the half pipe before gluing the adhesive foil strips, which could be the reason, what I will check again tomorrow.

Then I had also ordered a Chrome marker (1 mm) at Rai-Ro, which arrived today, which of course I tried out right away.

Around these markers of Molotow a real hype has arisen, whose highly pigmented special ink creates a real mirror effect on smooth, non-absorbent surfaces.

At first, however, I could not cope with the marker because I did not know that it was a Pumpmarker, which had to be shaken and briefly pumped before use.

While straight lines drawn with ruler are not a problem, using the marker on the half tube was a bit more difficult and definitely needs getting used to, which certainly requires some practice.

Therefore, the first six strips on the right end are certainly not optimal, but at least a ray of hope.



So much for the insights from my experiments today.

[eagleclaw4935]

Tell me this does'nt bring out the mad scientist in you.